Corrugated paper shredding machine



Nov. 22, 1960 L. WAGNON CORRUGATED PAPER sumsnnmc MACHINE 2 Sheets-Sheet1 Filed Dec. 16, 1957 INVENTOR. Ly/e H ag/m/Y- BY f? ,r ATTO K Nov. 22,1960 L. WAGNON 2,

CORRUGATED PAPER suaaonmc MACHINE Filed Dec. 16, 1957 2 Sheets-Sheet 2IN V EN TOR. Ly/e Way/70 United States Patent This invention relates tothe shredding of corrugated paper and the like and has for its primaryobject the provision of a machine that is appreciably less costly thanapparatus of its kind heretofore produced and placed in use and capableof handling a much larger volume of paper within a much shorter periodof time than has 16 and bottom wall 18, all as best seen in Fig. 4 ofthe drawings. Additionally, the casing 10 is provided with a pair of endwalls 20 and 22, the forwardmost edges 24 whereof slope downwardly andforwardly from wall 16 to wall 18.

An inlet opening 26 and an outlet opening 28 are provided in walls 14and 12 respectively adjacent the bottom 18, and it is noted that thelatter extends outwardly beyond the end walls 20 and 22 and therefore,through both openings 26 and 28.

A shredder 30 within the casing 10 includes a horizontal shaft 32extending through the walls 20 and 22 and journalled in bearings 34disposed exteriorly of the casing 10 and carried by supporting blocks 36which may serve the additional purpose of supporting the casing 10 ifdesired. Additionally, the shredder 38 includes 1 a plurality of bluntknives 38 radiating from the shaft heretofore been made possible throughprior efforts along the same line.

It is the most important object of the present invention to attain thedesired results above set forth by utilizing the principle of feedingthe material substantially horizontally through the machine from aninlet at the front thereof to an outlet at the rear of the machinewhereby the material is quickly and easily shredded within the casing ofthe machine without the necessity of prime movers having extremely highhorsepower outputs.

Another important object is to provide an inexpensive, yet highlyefficient machine by virtue of the fact that the same employs a novelbottom wall spanning the distance between the aforementioned inlet andoutlet and sloping inwardly and downwardly from the inlet to present aloading panel along which the material slides toward the shredder and adischarge panel that slopes upwardly and outwardly toward the outlet,all substantially in conformity to, and concentric with the axis ofrotation of the horizontal shredder.

Still another object of the present invention is to provide a shreddingmachine that employs a novel holding hook assembly co-operable with theshredder and disposed at the aforementioned bottom of the casing tosl.dably receive the material, feed the same upwardly into the path oftravel of the knives of the shredder, and block the free passage of thematerial from the casing to the outlet because of the provision ofupright lugs strategically disposed so as to retain the paper until thesame has been sufficiently shredded as to pass between the hooks to theoutlet.

Other objects include the way in which notches are formed in the hooksto retard any retrograde tendency of the paper, the manner in which thelugs of the hooks have leading edges substantially tangential to theaxis of the shredder and separated by the notches from the inclined rampedges of the hooks; and the way in which the hooks are staggeredthroughout the length of the holding hook assembly for more efficientover-all operation of the machine.

In the drawings:

Fig. l is an end view of a corrugated paper shredding machine madepursuant to my present invention.

Fig. 2 is a front elevational view thereof.

Fig. 3 is an enlarged, fragmentary, detailed, cross-sectional view takenon irregular line 33 of Fig. 2.

Fig. 4 is a transverse, cross-sectional view taken on line 4-4 of Fig.2; and

Fig. 5 is a cross-sectional view taken on irregular line 55 of Fig. 1.

A casing broadly designated by the numeral 10 is provided with a rearwall 12, a front wall 14, a top wall 32 and offset relatively throughoutthe length thereof as best seen in Figs. 2 and 5. Knives 38 arereleasably bolted in place between spaced fingers 40 integral with andradial to set collars 42 rigidly attached to the shaft 32 in spacedrelationship therealong.

Bottom 18 is V-shaped as best seen in Figs. 3 and 4, presentingtherefore, a fiat loading panel 44 spanning the distance between thewalls 26 and 22 and sloping downwardly and inwardly from the inlet 26 ormore specifically, from the lowermost and forwardmost ends of edges 24.Bottom 18 is also provided with an inclined discharge panel 46 thatslopes downwardly and inwardly from the outlet 28. The panels 44 and 46merge therefore, along a straight line 48 that is horizontally disposeddirectly beneath the shaft 32 and, therefore, in parallelism therewithand within a common vertical plane with shaft 32.

A holding hook assembly 50 on the bottom wall 18 within casing 10includes a plurality of hooks 52 spaced apart throughout the length ofbottom 18 from wall 20 to Wall 22 and conforming to the shape of thebottom 18 at the line of merger 48 thereof so as to seat firmly on theupper faces of panels 44 and 46. Hooks 52 are rigidly held in place onthe bottom 18 in any suitable manner (not shown) and each hook 52 has aramp edge 54 that slopes upwardly and rearwardly from the panel 44 tothe outlet 28.

Additionally, each hook 52 has an upstanding lug 56 that is in turnprovided with an upright, forwardmost edge 58 facing the inlet 26 anddisposed substantially perpendicularly to the panel 46. Accordingly, theedges 58 of all of the hooks 52 are likewise substantially tangentlal tothe shaft 32. Each book 52 is further provided with an upwardly facingnotch 68) between the ramp edge 54 and the upright edge 58 thereof.Finally, with respect to the assembly 50, it is to be noted that thehooks 52 assume three different positions along the length of theassembly 50, to the end that the distance between the lugs 56, as wellas the edges 58 thereof and the outlet 28, vary.

Additional features of the machine include a guard rail 62 for theprotection of operators feeding the material into the machine, rail 62being disposed forwardly of the edges 24 and substantially at the sameelevation as wall 16. Switch means 64 is conveniently located on one ofthe uprights 66 which support rail 62 and the same controls electricmotors 68 and '70, the latter being operably connected with the shaft 32as clearly illustrated in Figs. 2 and 5.

Motor 68 is carried by top wall 16 and drives a cutter 72 that may beemployed to cut corrugated sheets to the correct dimensions for use astop and bottom pads in a bailing machine that is in turn used to balethe shredded material emanating from the machine forming the subjectmatter of the instant invention.

Such sheets may be fed to the cutter 72 along platform 74 through whichcutter 72 extends, pressure rolls 76 being provided to hold the sheetsagainst the platform 74; a i i It is seen from the foregoing that as thematerial is fed into the casing through inlet 26, it slides downwardlyand forwardly along the panel 44 of bottom 18 and is thereupon directedupwardly and rearwardly by the ramp edges 54 of the hooks 52. Edges 54therefore, serve the purpose of feeding the material into the paths oftravel of the knives 38 inasmuch as the books 52 interleave with theknives 38 in the manner best illustrated by Figures 2 and 5. Therotating knives 38 of the shredder 30 moving clockwise as shown by thearrows in Fig. 4, force the material against the lugs 56 andparticularly against the edges 58 thereof, thereby blocking freemovement of the paper through the casing 10. Any tendency of the paperto buckle or otherwise move rearwardly or counter to the direction ofrotation of the shredder 30 is impeded by the notches 60 into which thematerial tends to be directed by the force of the knives 38. As soon asthe material is shredded sufiiciently by the knives 38 beating the sameagainst the lugs 56 so as to clear the hooks 52, such shredded materialwill be forced through the outlet 28 along the inclined panel 46 and beforcibly discharged from the casing 10 by the action of the shredder 30.

It is to be noted that the entire machine operates Without the neessityof expensive conveyors, belts and other paraphernalia as has heretoforebeen deemed necessary in machines of this character. All of the featuresabove set forth contribute to attainment of the basic desires andobjects of the instant invention initially set forth hereinabove,namely, that of inexpensive cost of production and more eflicient andrapid shredding of the material.

Having thus described the invention what is claimed as new and desiredto be secured by Letters Patent is:

l. A corrugated paper shredding machine comprising a hollow casingprovided with a pair of end walls, a front wall, a rear wall and abottom including a discharge panel, there being an inlet and an outletin the front and rear walls respectively adjacent said bottom; arotatable shredder in said casing having a horizontal shaft journaled insaid end walls and a plurality of knives radiating from the shaft; and aplurality of hooksrigidly mounted on said bottom and projecting upwardlywithin the casing between the openings, said hooks each being providedwith a ramp'edge for slideably receiving the paper as the same is fedinto the casing through said inlet and feeding the same into the path oftravel of said knives, said hooks being interleaved with said knives,the ramp edges thereof sloping upwardly from said bottom and toward saidoutlet, said hooks each having an upstanding lug between its ramp edgeand the outlet for blocking free flow of the paper to said outlet, saidlugs having upright edges facing the inlet, said edges beingsubstantially perpendicular to the discharge panel.

2. A corrugated paper shredding machine as set forth in claim 1, saidhooks having a notch formed therein between the ramp edges thereof andthe upright edges of said upstanding 'lugs.

References Cited in the file of this patent UNITED STATES PATENTS2,670,775 Elofson Mar. 2, 1954 2,706,088 Paul Apr. 12, 1955 2,828,923Kramer Apr. 1, 1958 2,842,175 Thompson Jilly 8, 1958 2,865,416 HetteenDec. 23, 1958

